Electronic controller box



FIG. 1 is a left side perspective view of an electronic controller box showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a front elevation view thereof; and,

FIG. 7 is a back elevation view thereof. 

The ornamental design for an electronic controller box, as shown and described. 